Design protocols in triarylamine cored dendrimer-based explosive sensors

Vamvounis, George, Shaw, Paul E. and Burn, Paul L. (2013) Design protocols in triarylamine cored dendrimer-based explosive sensors. Journal of Materials Chemistry C, 1 7: 1322-1329. doi:10.1039/C2TC00541G

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads

Author Vamvounis, George
Shaw, Paul E.
Burn, Paul L.
Title Design protocols in triarylamine cored dendrimer-based explosive sensors
Journal name Journal of Materials Chemistry C   Check publisher's open access policy
ISSN 2050-7526
2050-7534
Publication date 2013-01-01
Year available 2012
Sub-type Article (original research)
DOI 10.1039/C2TC00541G
Open Access Status Not Open Access
Volume 1
Issue 7
Start page 1322
End page 1329
Total pages 8
Place of publication Cambridge, United Kingdom
Publisher RSC Publications
Language eng
Abstract The preparation, photophysical characterisation and explosive sensing of two first-generation triarylamine-based dendrimers are reported. The dendrimers are constructed of a triphenylamine core, dendrons comprised of a phenyl branching unit with thiophene (Dendrimer 1) or bithiophene (Dendrimer 2) moieties, and dodecyl surface groups. By simply changing the number of thiophene units within the dendrons, it was found that the emissive chromophore could be switched from the centre (Dendrimer 1) to the dendrons (Dendrimer 2). Both Dendrimer 1 and 2 detected nitro-aromatic and -aliphatic analytes by fluorescence quenching, with the former showing a much greater response. In particular, Dendrimer 1 showed a particularly high affinity for the difficult-to-detect nitroaliphatic taggant 2,3-dinitro-2,3-dimethylbutane (DMNB). A combination of steady-state and time-resolved Stern–Volmer measurements revealed that the high affinity for DMNB was due to a combination of long luminescence lifetime and dominant static quenching.
Keyword Fluorescent carbazole dendrimers
Systems
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes First published on the web 19 Dec 2012

Document type: Journal Article
Sub-type: Article (original research)
Collections: Centre for Organic Photonics and Electronics
Official 2013 Collection
School of Chemistry and Molecular Biosciences
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 10 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 11 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Mon, 11 Mar 2013, 18:49:38 EST by George Vamvounis on behalf of School of Chemistry & Molecular Biosciences